Sciss obs-sh akpeher



N. LETENDRL.

SCISSORS SHARPENER.

APPLICATION FILED MAR, 12, 19H.

Patented Dec. 23, 1919.

ZZLeZerzZra bill NAPOLEON LETENDRE, 91E MANCHESTER lll'ElV HAMPSHIEE.

scrssonssnanrnnna.

To all whom it may concern:

Be it known that I, Niironnon Lnrnnnnn, a citizen of the United States, residing at lvlanchester, in the county of Hillsborough and State of New Hampshire, have invented a new and useful Scissors-Sharpener, of which the following is a specification.

This invention aims to provide a simple means whereby an orbital movement may be imparted to a scissors-blade or other tool with respect to an abrasive surface during the sharpenin operation. Another object is to provide novel means whereby the blade will be permitted to move vertically to compensate for irregularities in the abrasive surface. A further object of the invention is to so construct the blade-holding carriage that a draw stroke will be accomplished during the sharpening process, it being possible to sharpen the blade on a bevel.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings:

Figure 1 is a side view of my invention illustrating by dotted lines its operative relation to a pair of shears;

Fig. 2 is a top plan view of the essential details of my invention;

Fig. 3 is a sectional side view of the means whereby tool blades are held in operative relation to an abrasive surface.

In the drawings wherein is illustrated the preferred embodiment of my invention, like characters of reference indicate like or similar parts throughout the several views.

The numeral 1 designates a base of wood or other material provided adjacent one end with a depression 1 for the reception of an abrasive block 9. Mounted on the base 1 near to the other end thereof and alined with the longitudinal axis of the base is a rigid vertical support .3, upon which a collar 4 is mounted for adjustment longitudinally of the support, the collar being held in adj usted position by aset screw 5. The collar Specification of Letters Patent.

Application filed March 12, 1917.

Serial No. 154,251.

l has an extension 7 provided with a spherical socket 6.

A guide bar 8 is provided at one end with a reduced stem 9 having a ball 9 mounted in thesocket 6 to form a ball and socket connection between the guide bar 8 and the collar 4:. The guide bar 8 extends substantially the entire length of the base 1. Slidably mounted upon the guide bar 8 is a carriage generally designated by 10 and having a sleeve 11 receiving the guide bar, the construction being such that the carriage may reciprocate longitudinally of the guide bar and rock transversely thereof. Formed integrally with one terminal of the sleeve 11 is a downwardly and forwardly inclined jaw 12 extended laterally to one side of the bar 8, and disposed diagonally of the bar, when viewed in top plan as in Fig. 2. The jaw 12 is provided in its forward face with a recess 13 receiving a clamp 15, the jaw having a seat 14: in which one blade of a pair of scissors may be held by the clamp. A bolt and wing nut structure 17 carried by the jaw 12 serves as a support for the clamp 15 and constitutes a means for drawing the clamp toward the jaw to hold a scissors blade in the seat 1 1.

In operation, the carriage 10 is reciprocated longitudinally of the bar 8, and the bar is swung laterally in opposite directions, the ball and socket joint (L-9 permitting the bar to have such a movement. As a result the blade which is held in the seat 1 1 is given an orbital movement over the surface of the abrasive block 2. The bar 8 is permitted to have a vertical swinging movement, as well as a lateral or horizontal swinging movement, and consequently the blade will conform to irregularities in the surface of the abrasive block. The rearward and downward inclination of the jaw 12 facilitates the grinding of a beveled edge on the blade, and since the jaw extends laterally to one side of the bar, and because the jaw is disposed diagonally of the bar when viewed in top plan, a draw stroke is given to the blade during the sharpening process.

Particular attention is directed to the almost universal movement of the parts 12 and 15 with respect to the abrasive block 2. an exceedingly simple mechanism being employed to produce this result. The carriage 10 is adapted not only to reciprocate longitudinally of the guide bar 8, but to rock transversely thereon as well, and as a consequence, the blade in the carriage will c0- operate readily with the working surface of the abrasive member 2.

Having thus described the invention, what I claim as new is:

at one end thereof and extending downwardly and forwardly of the rod and dis posed at an oblique angle with respect to the longitudinal axis of the sleeve, and provided with a recess in one side thereof, and 20 a clamping jaw for retaining a scissors blade therebetween.

In testimony that I claim the foregoing as my own, I have hereto afiiXed my signature in the presence of two witnesses.

NAPOLEON LETENDRE. WVitnesses ISAAC L. HEATH, CYRUS H. LITTLE. 

